Horizon effects for surface waves in wave channels and circular jumps

TL;DR

This paper explores horizon effects in surface waves in fluids like water and oil, analyzing how fluid properties influence wave behavior and discussing experiments with wave channels and hydraulic jumps.

Contribution

It investigates horizon phenomena in classical fluids, highlighting the impact of fluid characteristics and experimental setups on wave dispersion and horizon effects.

Findings

Horizon effects depend on fluid type and depth.

Relativistic regimes can be achieved with specific dispersion tuning.

Experimental setups include wave channels and hydraulic jumps.

Abstract

Surface waves in classical fluids experience a rich array of black/white hole horizon effects. The dispersion relation depends on the characteristics of the fluid (in our case, water and silicon oil) as well as on the fluid depth and the wavelength regime. In some cases, it can be tuned to obtain a relativistic regime plus high-frequency dispersive effects. We discuss two types of ongoing analogue white-hole experiments: deep water waves propagating against a counter-current in a wave channel and shallow waves on a circular hydraulic jump.